In light of this recent trend, I'd like to review a few of these codebases so that I could improve my skills.<p>I'm not sure if this trend is new or not, but I'd be pretty damn impressed if someone responds with an actual ALGOL 60 codebase.
The ACM published algorithms in ALGOL in the <i>Communications of the ACM</i> beginning in the 1970's and continuing on from there until the feature moved to the
<i>ACM Transactions on Mathematical Software</i>. Programs intended for the Burroughs 5000 and 6000 series machines were mostly written in ALGOL 60, as was the operating system. The Computer History Museum has been collecting programs for historical purposes. See, for example, <a href="http://www.softwarepreservation.org/projects/ALGOL/source/numal/" rel="nofollow">http://www.softwarepreservation.org/projects/ALGOL/source/nu...</a>.
Here's "An ALGOL 60 compiler in ALGOL 60 : text of the MC-compiler for the EL-X8" <a href="http://oai.cwi.nl/oai/asset/13069/13069A.pdf" rel="nofollow">http://oai.cwi.nl/oai/asset/13069/13069A.pdf</a> (starting at page 29 in the PDF), with context at <a href="https://repository.cwi.nl/noauth/search/fullrecord.php?publnr=13069" rel="nofollow">https://repository.cwi.nl/noauth/search/fullrecord.php?publn...</a> .